Recent Submissions

Protoplanetary discs are thought to be truncated at orbital periods of around 10 d. Therefore, the origin of rocky short-period planets with P < 10 d is a puzzle. We propose that many of these planets may form through the ...

The objective of this study is to understand how a curriculum of an initial physics teacher education programme introduces elements of research in physics education for future teachers. This study is justified by the need ...

We report the serendipitous discovery of a stellar stream in the constellation Pegasus in the south Galactic hemisphere. The stellar stream was detected using the SDSS Data Release 14 by means of a matched filter in the ...

This work proposes simple experiments to introduce some fundamental concepts of the measurement area. It associates theory and practice through a strategy where the students create a real temperature data set with an Arduino ...

A new species of Pristella is described from the Río Meta drainage, Río Orinoco basin, Colombia. Pristella ariporo, new species, is described as the second known species of the genus and differs from P. maxillaris by lacking ...

The replacement of fossil fuels by renewable sources has been discussed globally, because fossil fuels account for a large portion of the pollutant emissions into the atmosphere. Several cities along the Brazilian coast ...

Citrus leprosis, caused by Citrus leprosis virus cytoplasmic type (CiLV-C), is one of the major citrus diseases. Such disease is mainly managed by controlling the vector, which is a mite of the genus Brevipalpus (Acari: ...

Methylation patterns established and maintained at CpG sites may be altered by single nucleotide polymorphisms (SNPs) within these sites and may affect the regulation of nearby genes. Our aims were to: 1) identify and ...

The number of described anurans has increased continuously, with many newly described species determined to be at risk. Most of these new species inhabit hotspots and are under threat of habitat loss, such as Brachycephalus, ...

This study aimed to evaluate the quality of the royal jelly produced by Apis mellifera bees in the presence of different iron concentrations (ferrous sulfate heptahydrate—0, 25, 50, and 100 mg L−1). Two-dimensional ...

The use of perovskite-based materials and their derivatives can have an important role in the heterogeneous catalytic field based on photochemical processes. Photochemical reactions have a great potential to solve environmental ...

The objective of this study was to evaluate the effect of the hydrofluoridric acid (HF) concentration and time of acid conditioning on bond strength of three glass ceramics to a resin cement. Thus, fifty blocks (10 mm x 5 ...

Soil carbon (C) sequestration has been considered as a tool for mitigating increased atmospheric CO2. The soil C sink can be increased by the use of no-tillage, cover crops, crop rotations, and integrated crop-livestock ...

The goal of this work is to analyze the effect of the drain to gate and to biomaterial alignments on n-type Tunnel-FET (nTFET) working like a permittivity based biosensor. The biomaterial over the drain and channel region ...

The least limiting water range (LLWR) is a soil physical quality indicator that receives much attention. It has been criticized and put to the test regarding mathematical models that compose it since they describe the ...

The proposal of this work is to present an analysis of omega-shaped-gate silicon nanowire field-effect-transistors operating in the subthreshold region. It is analyzed three channel widths (WNW), 220, 40 and 10 nm. In the ...

(1) Background: Vitiligo is characterized by white patches on the skin caused by loss of melanocyte activity or the absence of these cells. The available treatments minimize the symptoms by retarding the process of skin ...

Here we evaluate the potential of heavy metal accumulation of Proteocephalus macrophallus parasitizing the Butterfly Peacock Bass (Cichla ocellaris). A total of 19 fish specimens were collected. From the hosts, samples of ...

Titanium alloys are widely used in the biomedical field due to their good corrosion resistance, high mechanical strength/density ratio, low elastic modulus, and good biocompatibility. With the addition of β-stabilizers ...